Resistance to viral nervous necrosis in European sea bass (Dicentrarchus labrax L.): heritability and relationships with body weight, cortisol concentration, and antibody titer

Table 3 Estimates^a of heritabilities and correlations obtained in the bivariate analyses

Trait 1	Trait 2	Trait 1			Trait 2			Correlations
Trait 1	Trait 2	\({\sigma }_{a}^{2}\)	\({\sigma }_{p}^{2}\)	\({h}^{2}\)(HPD95%	\({\sigma }_{a}^{2}\)	\({\sigma }_{p}^{2}\)	\({h}^{2}\)(HPD95%	\({r}_{p}\)(HPD95%)	\({r}_{a}\)(HPD95%)	P
MORT	BW	0.26	1.13	0.228 (0.057, 0.468)	879	1953	0.451 (0.245, 0.702)	− 0.085 (− 0.215, 0.044)	− 0.388 (− 0.878, 0.198)	0.884
MORT	SHRC	0.25	1.13	0.223 (0.058, 0.455)	4.5	19.2	0.237 (0.078, 0.449)	0.020 (− 0.107, 0.148)	− 0.078 (− 0.746, 0.625)	0.578
MORT	AT	0.27	1.13	0.236 (0.063, 0.467)	336	1030	0.328 (0.158, 0.539)	− 0.022 (− 0.149, 0.099)	− 0.388 (− 0.866, 0.191)	0.886
SHRC	AT	3.6	18.6	0.196 (0.068, 0.366)	424	1079	0.394 (0.189, 0.635)	− 0.035 (− 0.136, 0.070)	0.115 (− 0.420, 0.631)	0.815
SHRC	BW	3.6	18.6	0.193 (0.066, 0.358)	1268	2148	0.592 (0.354, 0.851)	− 0.023 (− 0.134, 0.090)	0.268 (− 0.275, 0.773)	0.652
AT	BW	410	1069	0.384 (0.175, 0.631)	1290	2160	0.599 (0.361, 0.859)	0.249 (0.134, 0.366)	0.490 (0.085, 0.814)	1.000

MORT post-challenge VNN mortality as a binary trait (0: alive, 1: dead), BW body weight (g) at 548 d post-hatching, SRHC square root of serum cortisol concentration (ng^0.5/ml^0.5), AT antibody titer (sample to positive ratio of the optical density values, OD 450 nm)
^aThe median of the marginal posterior density has been used as a point estimate of parameters; (co)variance components were estimated with bivariate sire-dam models when mortality was one of the analysed traits or with bivariate animal models when mortality was not considered. A probit model was used for mortality. \({\sigma }_{a}^{2}\): additive genetic variance; \({\sigma }_{p}^{2}\): phenotypic variance; \({r}_{p}\): phenotypic correlation; \({r}_{a}\): additive genetic correlation

ISSN: 1297-9686